288799 has 4 divisors (see below), whose sum is σ = 330064. Its totient is φ = 247536.

The previous prime is 288773. The next prime is 288803. The reversal of 288799 is 997882.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 288799 - 2⁵ = 288767 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20622 + ... + 20635.

It is an arithmetic number, because the mean of its divisors is an integer number (82516).

2²⁸⁸⁷⁹⁹ is an apocalyptic number.

288799 is a deficient number, since it is larger than the sum of its proper divisors (41265).

288799 is an equidigital number, since it uses as much as digits as its factorization.

288799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41264.

The product of its digits is 72576, while the sum is 43.

The square root of 288799 is about 537.4002232973. The cubic root of 288799 is about 66.0995589562.

The spelling of 288799 in words is "two hundred eighty-eight thousand, seven hundred ninety-nine".